How far is Thurmont, MD from Gaithersburg, MD?
The driving distance from Thurmont, MD to Gaithersburg, MD is about 40.3 miles (64.9 km), with a travel time of about 00h 43m by car.
- The straight-line flight distance is about 35 miles (56.4 km).
- For a round trip, plan for roughly 01h 27m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 43m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in Frederick County, Maryland, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Thurmont and Gaithersburg.
Turn-by-Turn Driving Directions
Step-by-step road directions between Thurmont and Gaithersburg.
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1
Start on East Main Street
62 m · 12 sec · East Main Street
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2
Turn left onto Water Street
677 ft · 24 sec · Water Street
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3
Turn right onto Frederick Road
1.1 km · 1 min · Frederick Road
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4
Turn right onto Tippin Drive
540 ft · 21 sec · Tippin Drive
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5
Take the ramp left toward US 15 South
1478 ft · 36 sec
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6
Merge slight left onto Catoctin Mountain Highway
12.5 mi · 17 min · Catoctin Mountain Highway
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7
Continue on Frederick Freeway
4 mi · 5 min · Frederick Freeway
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8
Continue on Eisenhower Memorial Highway
19.9 mi · 25 min · Eisenhower Memorial Highway
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9
Take the exit slight right toward MD 124: Montgomery Village Avenue, Quince Orchard Road
1.3 km · 2 min
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10
Keep slight left to continue on MD 124 North: Montgomery Village Avenue
39 m · 5 sec
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11
Turn left onto Quince Orchard Road
2237 ft · 45 sec · Quince Orchard Road
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12
Turn right onto North Frederick Avenue
1.4 km · 2 min · North Frederick Avenue
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13
Turn right
26 m · 6 sec
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14
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Thurmont and Gaithersburg.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Eisenhower Memorial Highway
Continue on Eisenhower Memorial Highway
19.9 mi · 00h 25m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Sunny leaving Thurmont and Sunny near Gaithersburg.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Thurmont to Gaithersburg?
The road trip is about 40.3 miles (64.9 km) and usually takes 00h 43m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Ballenger Creek is a useful midpoint, sitting about 19.9 miles from Thurmont and 20.4 miles from Gaithersburg.
How much longer is the road route than the straight-line distance?
The direct path is about 35 miles (56.4 km), while the road route adds roughly 5.3 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:02 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.80 one way or $11.60 round trip. Estimated CO2 is about 12.6 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Thurmont and Sunny near Gaithersburg.
Stop Ideas Near Ballenger Creek
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Ballenger Creek.
Frederick, MD
Frederick Airport, MD
Harpers Ferry
Hagerstown, MD
Flight Path Map
This map shows the direct air route between Thurmont and Gaithersburg. Straight-line distance: 35.02 mi (56.36 km).
#1 Thurmont
Town in Frederick County, Maryland, United States
| Population | 7,070 |
| Coordinates | 39.6237100, -77.4108200 |
| Altitude | 158 |
| Country | United States |
#2 Gaithersburg
The second most populous city in Montgomery County, Maryland.
| Population | 67,741 |
| Coordinates | 39.1434400, -77.2013700 |
| Altitude | 153 |
| Country | United States |
End: (-77.201269, 39.143361)
Estimated Travel Time
Distance: 65 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 20m |
| 40 mph (64.37 km/h) | 01h 00m |
| 50 mph (80.47 km/h) | 00h 48m |
| 60 mph (96.56 km/h) | 00h 40m |
| 70 mph (112.65 km/h) | 00h 34m |
| 80 mph (129 km/h) | 00h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $5.80 | $11.60 |
| Mid-grade | $4.60 | $6.53 | $13.06 |
| Premium | $4.95 | $7.03 | $14.07 |
| Diesel | $5.98 | $8.49 | $16.98 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Maryland · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.